Mathematical Methods in Applied Sciences

Inserted: 9 mar 2014
Last Updated: 15 mar 2017

Year: 2014

Abstract:

We prove the Saint-Venant compatibility conditions in $L^p$ in a simply connected domain, with $p \in (1,+\infty)$. Moreover we use the Helhmoltz decomposition to deduce that every symmetric $L^p$ tensor in a smooth domain can be decomposed in a compatible part, which is the symmetric part of the gradient of a displacement, and in an incompatible part, which is the incompatibility of a certain divergence-free tensor. We observe that if the displacement satisfies a Dirichlet condition on the boundary, the decomposition is unique. We apply these results to provide an alternative proof of some classical Korn inequalities, which are very important in elasticity

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• Accepted paper: Math. Models Methods Appl. Sci.